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Naming convention for unique constraint
... constraint and a unique index is INCLUDE columns.
Edit: Feb 2013. Since SQL Server 2008, indexes can have filters too. Constraints can not
So, it comes down to one of
stick with UQ as per the rest of the SQL-using planet
use IK for unique indexes (IKC for clustered too) to be consistent...
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When should I use cross apply over inner join?
... be worth mentioning that this is called a lateral join in standard (ANSI) SQL
– a_horse_with_no_name
Jan 8 '15 at 11:05
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Accessing an SQLite Database in Swift
I'm looking for a way to access an SQLite database in my app with Swift code.
12 Answers
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Cannot use identity column key generation with ( TABLE_PER_CLASS )
...ass" inheritance and GenerationType.Auto.
Consider an identity column in MsSQL. It is column based. In a "table-per-class" strategy you use one table per class and each one has an ID.
Try:
@GeneratedValue(strategy = GenerationType.TABLE)
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ORA-01882: timezone region not found
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In a plain a SQL-Developer installation under Windows go to directory
C:\Program Files\sqldeveloper\sqldeveloper\bin
and add
AddVMOption -Duser.timezone=CET
to file sqldeveloper.conf.
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Remove Identity from a column in a table
...ok into this link for more details about removing the attribute only: blog.sqlauthority.com/2009/05/03/… ..Good luck!
– Nonym
Nov 22 '11 at 17:01
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MySQL - Rows to Columns
I tried to search posts, but I only found solutions for SQL Server/Access. I need a solution in MySQL (5.X).
12 Answers
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How to convert TimeStamp to Date in Java?
...is unfortunate. You should instead be using a column of a type such as the SQL-standard TIMESTAMP WITH TIME ZONE. But, for this Answer, we will work with what we have.
If your records represent moments with a resolution of milliseconds, and you want all the records for an entire day, then we need a...
SQL - many-to-many table primary key
...pe and dictates your DB design for you...
Edit: I answered the same here: SQL: Do you need an auto-incremental primary key for Many-Many tables?
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Hibernate vs JPA vs JDO - pros and cons of each? [closed]
...ostic and so is not limited to the RDBMS world. With the ground swell of NoSQL at the moment a person would be wise to consider using a persistence standard that avoids locking their apps to the traditional *SQL world. JDO applications can easily be deployed non RDBMS datastores. Full list of suppo...